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New energy power battery shell and cover aluminum alloy material preparing method

A technology of aluminum alloy materials and power batteries, which is applied in the direction of battery box/case materials, battery pack parts, battery box/coating, etc., can solve the problems such as the overall performance needs to be improved, and achieve excellent laser welding performance, convenient processing, and abnormal The effect of low weld pool occurrence rate

Inactive Publication Date: 2019-02-22
合肥天沃能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aluminum alloy strip produced by it has good deep drawing performance and laser weldability, and can better solve the above-mentioned problems, but its overall performance still needs to be improved

Method used

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  • New energy power battery shell and cover aluminum alloy material preparing method
  • New energy power battery shell and cover aluminum alloy material preparing method
  • New energy power battery shell and cover aluminum alloy material preparing method

Examples

Experimental program
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Effect test

Embodiment 1

[0039] This embodiment relates to an aluminum alloy material for a new energy power battery shell and cover. The aluminum alloy material is composed of the following components by weight percentage:

[0040] Si: 0.32%, Mg: 0.58%, Sr: 0.20%, Mn: 0.67%, Be: 0.18%, Zr: 0.15%, Sb: 0.12%, Er: 0.10%, Pr: 0.03%, Tb: 0.01%, Dy: 0.04%, B: 0.003%, Ga: 0.001%, and the balance is Al.

[0041] The preparation method of the above-mentioned new energy power battery shell and cover aluminum alloy plate and strip generally follows the following steps:

[0042] Step 1: Take the aluminum ingots, the required aluminum master alloy ingots and the elemental metal and transport them to the smelting furnace, successively perform smelting, refining, slagging, and online degassing to obtain molten metal; in step 1, the refining uses an argon furnace Bottom purging refining, the refining temperature is 740℃, the refining time is 25min, the refining agent selected is potassium fluoroaluminate, magnesium chlori...

Embodiment 2

[0052] This embodiment relates to an aluminum alloy material for a new energy power battery shell and cover. The aluminum alloy material is composed of the following components by weight percentage:

[0053] Si: 0.36%, Mg: 0.62%, Sr: 0.23%, Mn: 0.72%, Be: 0.21%, Zr: 0.18%, Sb: 0.16%, Er: 0.13%, Pr: 0.05%, Tb: 0.03%, Dy: 0.06%, B: 0.004%, Ga: 0.002%, and the balance is Al.

[0054] The preparation method of the above-mentioned new energy power battery shell and cover aluminum alloy plate and strip generally follows the following steps:

[0055] Step 1: Take the aluminum ingots, the required aluminum master alloy ingots and the elemental metal and transport them to the smelting furnace, successively perform smelting, refining, slagging, and online degassing to obtain molten metal; in step 1, the refining uses an argon furnace Bottom purging refining, the refining temperature is 745℃, the refining time is 22min, and the refining agent selected is potassium fluoroaluminate, magnesium ch...

Embodiment 3

[0065] This embodiment relates to an aluminum alloy material for a new energy power battery shell and cover. The aluminum alloy material is composed of the following components by weight percentage:

[0066] Si: 0.41%, Mg: 0.66%, Sr: 0.25%, Mn: 0.78%, Be: 0.24%, Zr: 0.23%, Sb: 0.20%, Er: 0.16%, Pr: 0.06%, Tb: 0.05%, Dy: 0.08%, B: 0.005%, Ga: 0.004%, and the balance is Al.

[0067] The preparation method of the above-mentioned new energy power battery shell and cover aluminum alloy plate and strip generally follows the following steps:

[0068] Step 1: Take the aluminum ingots, the required aluminum master alloy ingots and the elemental metal and transport them to the smelting furnace, successively perform smelting, refining, slagging, and online degassing to obtain molten metal; in step 1, the refining uses an argon furnace Bottom purging refining, the refining temperature is 750℃, the refining time is 20min, the refining agent selected is potassium fluoroaluminate, magnesium chlori...

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Abstract

The invention discloses a new energy power battery shell and cover aluminum alloy material preparing method, and relates to the technical field of new energy batteries. The method comprises the firststep of smelting, the second step of refining, drossing and online gas removal, the third step of semicontinuous casting, the fourth step of saw cutting, face milling and homogenizing, the fifth stepof rolling, the sixth step of annealing and the seventh step of cleaning, finishing and straightening. A new energy power battery shell and cover aluminum alloy is excellent in comprehensive performance; through integrity improvement and optimization on the aluminum alloy components and content and the preparing technology, the application performance of a prepared new energy power battery shell and cover product is obviously improved, substantive breakthrough is particularly achieved in the aspects of tensile strength, regulated non-proportion extension strength, percentage elongation after fracture, stability, punching performance and welding performance indexes, the application occasion and field are wide, and the active demand of the new energy market for high-performance power batterycover and shell products can be greatly met.

Description

Technical field [0001] The invention relates to the technical field of new energy batteries, in particular to a method for preparing aluminum alloy materials for new energy power battery shells and covers. Background technique [0002] With the rapid development of new energy technology, the application of new energy electric power vehicles has been more extensive. It has excellent characteristics such as pollution-free, low noise, and no exhaust pollution. It is very beneficial to environmental protection and air cleaning. It is "zero pollution", and electric vehicles have no noise generated by internal combustion engines, which cause little harm to the human body’s auditory, nerve, cardiovascular, digestive, endocrine, and immune systems. In addition, electric vehicles have high energy efficiency, especially in urban operation , Cars go and stop, and the driving speed is not high. New energy vehicles are more suitable. In order to achieve the above effects, the on-board power ...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/03C22C1/06C22F1/04H01M2/02H01M50/116
CPCC22C1/026C22C1/03C22C1/06C22C21/00C22F1/04H01M50/116Y02E60/10
Inventor 魏芳芳
Owner 合肥天沃能源科技有限公司
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